Sewer line proofer tool



FIG. 1 is a side elevational view of a sewer line proofer tool showing my new design;

FIG. 2 is a front elevational view thereof; and

FIG. 3 is a rear elevational view thereof.

The broken line representation of a nozzle in FIG. 1 is for purposes of illustration only. 

The ornamental design for a sewer line proofer tool, substantially as shown and described. 